| 摘要 |
The invention relates to a mine roof support frame (1) comprising at least one hydraulic excavation cylinder (8) which is mounted on a bridge member (3) that interconnects the two floor skids (2) of the base frame and can be deployed by applying pressure downward against an advancing beam (4) of the advancing gear of the mine roof support frame (1). Said advancing gear being disposed between the floor skids. According to the invention, the excavating device (5) encompassing the floor skids is pivotally connected to the bridge member (3). All it takes to be able to perform maintenance work on the advancing beam (4) or the cylinder of the advancing gear is to pull bearing bolts (12) on one side and swivel away the excavating device (5) encompassing the floor skids about the opposite bearing bolts (12).
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